At the campus Diana Thyssen is raped in the toilets. They get stuck with the investigations and Inspector Donckers thinks her old Professor in Criminology might help. She has a friend, Saskia Devriese, who was raped on a campus ten years ago. She thinks both cases have the same perpetrator. But can she persuade Professor Teerlinck to help her, because he's not especially social, says what he thinks and defends opinions which go against public opinions?

The head librarian of the university is poisoned at a reception. The wrong person might have been killed. The police start to think that the real target is a civil servant who forged an environmental report who also was present at the reception. Due to the forged report, the daughter of a young family is very sick in hospital. The father might have something to do with the death of the librarian.

Yolande De Letter, the inspector of a school-evaluation team, is murdered at home. At first it looks like a robbery gone wrong, but Annelies Donckers thinks there is more to it. Jasper and she discover that director Herman Symens of the school Sint Lutgardis who was inspected might have a motive. The school was on the brink of getting a bad report. But also her husband Marc is a possible perpetrator. They were heading for a divorce and financially he would have suffered a lot.

Davy Desmedt, a first year law student, has disappeared without a trace. It could be an act of despair, but they soon find out there is more to it. He is from simple origin, but he has a lot of money in the bank.

Hendrik Marsboom, an acknowledged plastic surgeon, is found murdered in a hotel room. De woman who shared his room has disappeared. When they finally find her, the police think her jealous husband might know more about the whole thing.

A call-girl is found dead in her apartment. It looks like she hanged herself, but the police soon discover the suicide is staged. Jasper is very touched when the call-girl appears to be Tamara.

The gruesome murder on Peter Catrysse and his wife appears to be an exact copy of a murder ten years ago. Dany Van Genechten, the perpetrator of that murder is still behind bars.

Antwerp is startled by a brutal double murder. During the evening rush hour a known coke dealer and his lover are shot down by a masked perpetrator. The police think it's a pay-off.

Au pair Silke Banier comes home after an evening off. She finds her employer, Max Tersago, unconscious in the living room. Six year old son Koben has vanished. The investigation leads the police to Max's business partner Willem Denys.

Dirk Seynaeve is accused of having killed his employer after being caught at the scene, holding the murder weapon. He denies being guilty, but the case goes to trial anyway. Professor T. however is convinced the man is innocent.

There is a hit on prominent businessman Johan Verhulst during an official happening. The shooter fails. A few days later a lot of blood is discovered in his upside down turned living-room, but there is no body. Verhulst has disappeared. Jasper deducts everything is staged by Verhulst himself, but then he is found dead after all.

A man is found strangled with a scorched face. The number 1991 is cut into his chest. When 24 hours later a second victim is found, also with a year cut into his body, the investigators realize they're dealing with a serial killer.

Daan is in hospital fighting for his life after the killer shot at him. In the mean time the police try to find connections between the victims, because they have no idea about the killer.